package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Employee;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceimpl  implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;
    /**
     * 新增分类
     * @param categoryDTO
     */
    public void save(CategoryDTO categoryDTO) {
        Category category=new Category();

        //拷贝属性 将dto里面的类容拷贝到en
        BeanUtils.copyProperties(categoryDTO,category);
        //设置状态 1启用 0禁用
        category.setStatus(StatusConstant.ENABLE);
        //设置创建时间修改时间
     /*   category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());
        //设置创建人id
        category.setCreateUser(BaseContext.getCurrentId());
        category.setUpdateUser(BaseContext.getCurrentId());*/

        categoryMapper.insert(category);
    }

    /**
     * 分类分页查询
     * @param categoryPageQueryDTO
     * @return
     */
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        //开始分页
        //当前页码和分类数据
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
        Page<Category> page= categoryMapper.pageQuery(categoryPageQueryDTO);
        long total = page.getTotal();
        List<Category> result = page.getResult();
        return new PageResult(total,result);
    }

    /**
     * 启用禁用分类套餐
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id) {

        Category category=new Category();
        category.setId(id);
        category.setStatus(status);
        categoryMapper.update(category);
    }

    /**
     * 修改分类
     * @param categoryDTO
     */
    public void update(CategoryDTO categoryDTO) {
        Category category=new Category();
        BeanUtils.copyProperties(categoryDTO,category);
     /*   category.setUpdateTime(LocalDateTime.now());
        category.setCreateUser(BaseContext.getCurrentId());*/
        categoryMapper.update(category);
    }

    /**
     * 根据id删除分类
     * @param id
     */
    public void delete(Long id) {
      Integer count1=dishMapper.findById(id);
        if (count1>0){
            //查到了有菜品 抛出异常
            //当前分类下有菜品，不能删除

            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);

        }
    Integer  count2=setmealMapper.findById(id);
        if (count2>0){
            //查到了有套餐 抛出异常
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.delete(id);
    }

    /**
     *
     * 根据类型查询分类
     *
     */

    public List<Category> select(Integer type) {

        return  categoryMapper.select(type);
    }
}
